Title says it all again
Those who can count have a clear advantage. So it used to warn 150 per step. If you weren't so lazy you would have just calculated 1000: 150.
What do you expect from a fn kiddie?
Preferably none at all.
Save the money and invest it in a math tutorial so that you can at least learn the basic maths.
Suppose a level costs x Vbucks.
Then you can buy 1000 / x Battlepasslevel with 1000 Vbucks.
That they can count to 6.
1000/150 = 6.66
Say it is enough for 6 levels.